SA58641 Datasheet, PDF (6/17 Pages) NXP Semiconductors – High performance mixer FM IF system with high-speed RSSI

Philips Semiconductors
High performance mixer FM IF system
with high-speed RSSI
Objective data
SA58641
PERFORMANCE CHARACTERISTICS (continued)
10
2
10
2.0
AUDIO
0
AUDIO
1.8
0
1.8
–10
1.6
–10
1.6
–20
1.4
–20
1.4
AM REJECTION
AM REJECTION
–30
RSSI
1.3
–30
1.2
–40
THD+N
–50
–60
NOISE
–70
–80
1.0
–40
1.0
0.8
–50
THD+N
0.8
NOISE
0.6
–60
0.6
0.4
–70
RSSI
0.4
0.2
–80
0.2
–90
0
–90
0.0
RF INPUT LEVEL (dBm)
Receiver RF Performance — T = 25°C,
Audio Level = 129mV_RMS
10
2
AUDIO
0
1.8
–10
1.6
–20
AM REJECTION
–30
1.4
RSSI
1.2
–40
1
–50
THD+N
0.8
–60
NOISE
0.6
–70
0.4
–80
0.2
–90
0
Receiver RF Performance – T = 85°C, Audio Level = 131mV_RMS
RF INPUT LEVEL (dBm)
Receiver RF Performance — T = –40°C,
Audio Level = 118mV_RMS
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
RF INPUT POWER (dBm)
Mixer Third Order Intercept and Compression
85
–5
RF level = -45 dBm
–7
–9
–11
–13
5.5V
–15
–17
–19
–21
–23
–25
–40
0
25
70
Temperature (°C)
Mixer IIP3 at 240MHz vs Temperature and Supply Voltage
2
–40°C
1.8
1.6
25°C
85°C
1.4
1.2
1
0.8
0.6
0.4
0.2
0
RF INPUT LEVEL (dBm)
RSSI vs RF Input Level and Temperature
SR02523
Figure 4. Performance Characteristics
2004 Dec 16
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